# include <cstdio>
# include <vector>
# define NMAX 50001
# define MMAX 100001
using namespace std;
FILE *f=freopen("sortaret.in","r",stdin);
FILE *g=freopen("sortaret.out","w",stdout);
int q[NMAX] , grad[NMAX];
vector <int> v[NMAX];
int n,m;
void sortaret()
{
    int i;
    for (i=1;i<=n;i++)
        if (!grad[i]) q[++q[0]]=i;
    for (i=1;i<=n;i++)
    {
        int nod=q[i];
        for (vector <int> :: iterator it=v[nod].begin(); it!=v[nod].end();it++)
        {
            grad[*it]--;
            if (!grad[*it]) q[++q[0]]=*it;
        }
    }
}
int main()
{
    int x,y,i;
    scanf("%d%d",&n,&m);
    for (i=1;i<=m;i++)
    {
        scanf("%d%d",&x,&y);
        v[x].push_back(y); grad[y]++;
    }
    sortaret();
    for (i=1;i<=n;i++) printf("%d ",q[i]);
    return 0;
}